This Schneider has a wire stretched along its length and connected to a piece of metal. Looks suspiciously like an antenna or aerial for a wireless set.
Ce Schneider a un fil tendu sur toute sa longueur et relié à un morceau de métal. Regarde étrangement comme une antenne pour un ensemble telegraphie/telephonie sans fil.
It's a semaphore device. Pulling the wire lifts the flap to reveal IIRC red & white markings to call for infantry support. Or something close to that. Not radio.
Update: I wasn't far out. I think Michel Tanker explained it a while back, and Steve Zaloga illustrates and describes same on pp 12 & 13 of the Osprey
French Tanks of World War I.
-- Edited by James H on Tuesday 22nd of May 2018 10:11:10 AM
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